lambie



2 Smeets-sheet 1.

l (maar.) R. M. LAMBIE.

BOOK HOLDER.

Patented Aug. 21, 188.3.

2 Shets--Sheet 2f (Model.)

R. LAMBIB.

BOK HOLDER.

No. 283,@5. Patented Aug. 21, 1883.

' view of the upper portion.

UNITED STATES PATENT OFFICE.

ROBERT M. LAMBIE, O F NEW' YORK, X. Y.

BooK-HOLDER.

ySPEL'II-`ICA'1.I')N forming part of Letters Patent No. 283,495, datedAugust 21, i883, Application filed July Q4, 188i. (Model.) Patented inEngland August lo. D82, No. 3,918.

and useful Improvements in Boolr-Holclers and I do hereby declare thatthcfollowing is a full, clear, and exactA description of the same. Myinvention relates to an apparatus for holding a dictionaryor other`large volume sov that it may be readilyr opened for reference, and asreadily closed, and held Vso as to be protected-from dust and exposure.y

The accompanying drawings represent an apparatus embodying myimprovements` Figure 1 is a perspective View of the apparatus inposition for use.l Fig.`2 is a side Fig. 8 is an end view of the same.Figs. 4 and 5 are detail views.

The working parts of the apparatus are supported by an adjustablestandard and a folding lee-frame. The standard consists of a rod, A,having at its upper end a socket, a, for the reception of a pivot, and aset-screw,

' for seouringthe pivot vwhen in the socket.

The legs B are` of metal, and any number may be employed. As here shownthere are three. The upper partof each leg is formed into a shank, b,from twojopposite sides of which extend two pivots, b2, cast with theleg and shank. vAbove these pivots, when the legs are in place, theshank is vertical, and

' the portion. ofthe leg below the pivots is curved outward in anysuitable form. Three or more legs are placed together to form aleg-frame by passing the pivots b2 Vupward into a pear-shaped sleeve,(l, through slots radiating from the central aperture, and theninserting the standard A between them. The pivots have bearings in agroove, c, running around the interior of the largest portion of thepear-shaped sleeve C, and the Shanks b rest against the outside of saidsleeve, where they are held in place by a ring o r band, E, of the shapeshown in Fig. 5, which is slipped over them, as shown in Figs. l and 4.The sleeve C is provided with a thumb-screw, e, for holding the standardA in place at any desired height. Then the ring or band E is removedfrom around the Shanks, the legs are free to swing toward each other, asindicated by dotted lines in Fig. 4, so that the legs and standard maybe packed in a small space.

The book-holder consists of a' central baseboard and two adjustableswinging or folding boards. To the baseboard F is attached a skeletonplate or frame consisting rof a quadrangular portion, (l, secured to thebottom ofY the board by screws, and' two seinicircular braces, G2,extending from the bottom of said qnadrangular portion and crossing eachother at right angles. V

From two opposite sides ofthe frame, in line with one ofthe semicircular braces, extend two arms, G3. rangular portion G, in line withthe arms G3, are two semicircular depressions, g, which form bearingsfor the ends of two arms, H, entend-` ing laterally from a bifnrcatedvertical post, J, the lower end of which is formed into a taperingpivot, i, having a peripheri cal groove around it. The arms H extend'from one ofthe branches ofthe bifurcated post, and the other branch isprovided with a set-screw, j. Between the two branches of the bifurcatedpost works one of the semicircular braces G2. andr the point of theset-screw j engages lwith In the upper surface of the qnad-V notches ordepressions g2 in the surface of said brace. By this means thebase-board F may be made to swing from a horizontal to a nearly verticalposition, and is held in place in either of said positions or anyintermediate position by means of the set-screw j and depressions g2.

The adjustable swinging or folding boards are connected to thebase-board F in the Vfollowing manner: To the back of each board K oftwo arms extending laterally from a T- shaped plate or bar, M. The endof the main bar of the piece M is formed into a tube or sleeve, m, andprovided with a set-screw, fn- The tubes or sleeves mtit on the arms G3,above described, and are secured by the set-screws n, and by this meansthe boards K are hinged to the base-board F, so that they may be made toswing from a vertical to a horizontal posi- IOO tion after the manner ofopening and closing a book.

The book is held by resting it on the baseboard F and swinging boards K,as shown' clearly in Fig. 8, and by means of the tubes or sleeves m andset-screws n the boards K are adjusted toward or from each other toaccommodate, books of different thicknesses. The lower edges of theboards K are provided with cleats k, to prevent the book from slippingwhen the boards are inclined from a horizontal position. These cleatsare provided with dowel-pins engaging with holes in the boards, so thatthey may be readily placed in position and removed at pleasure.

In order to'hold the boards K in place with a book either open orclosed, but more especially when the book is closed between the boards,the following devices are employed: A bar, P, has at one end a lateralarm, p,which works in bearings consisting ofuiotches in the plate or barL. A wire spring, Q, is wound around the arm p, with one end ofthe wire@bearing against the plate L, and the other end pressed upward.

engaging with a horn or projection, p2, on the arm p, with a tendency tokeep the bar P The outer end of the bar P is bent at a right angle tothe direction ofthe arm p, and is formed into a hook, p, which engageswith an arm, mi, projecting laterally from the tube or sleeve m.4 Vhenthe bookY is closed, the tendency of the springs Q to raise the bars Pcauses said arms to press against the boards K and hold them firmlyagainst` the book, so as to keep it closed. The upward motion of the baris limited by the engagement of the hook p3 with the arm mi. Vhen thebook is to be opened, the hooked arm p3 slides overthe arm m2 and liesagainst the back of the board K, as shown in Fig. 3;

Referring to Fig. l, R represents a bar provvided with two claws, r r,and a set-screw, S, by which means the bar may be attached to thestandard A. The outer end ofthe bar is provided with a socket, V, forthe `reception of a pivot, by which means a desk attachment such as thatshown in my patent of August 9,

plates secured on the horizontal arms, and

provided with upward-extending` stop-arms, and a locking-bar pivoted toeach of the hinged plates, adapted to engage the upward-extendingstationary arms when the hinged boards are brought to a verticalvposition in closing the book, and to slide freely thereon when force isapplied to open the same, substantially as described.

2. The plate or bar M, formed with the sleeve m and arm fm?, andprovided with set-screw n, and the supporting-arm G, in combination withthe plate or bar L and bar P, substan tially as shown and described.

3. The co1nbination,with the swinging board K, the T- shaped plate orbar L, the T- shaped plate or bar M, hinged thereto, and provided withthe arm mi, the sleeve m, and supportingarm, of the bar P, formed withthe hooked arm p, and arm p, provided with spring Q, as shown anddescribed.

4. The combination of the adjustable standard A, sleeve C, provided withslots, as described, and the recess or groove c, with the legs B,provided with pivots b2, adapted to be retained in the recess or groovec by the presence of said standard A, the upward-extending shanks b, andband E, adapted to fit over said Shanks b, substantially as shown anddescribed.

R. M. LAMBIE.l

Vitnesses:

' E. R. BROWN,

DANIEL SicKELs.

